Average annual temperature is 16.6 °C
Absolute maximum temperature: 38.8 °C
Absolute minimum temperature: -5.7 °C
Number of sunny days: 162 days
Number of rainy days: 198 days
Number of snow days: 5 days
Look at detailed online map of Ōnuma
* Weather data for Ōnuma Japan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 14.1 | 19.1 | 25.7 | 27.5 | 32.9 | 32.0 | 38.8 | 38.4 | 35.7 | 27.9 | 25.5 | 19.5 |
| Average daytime temperature (°C) | 9.3 | 11.3 | 17.4 | 21.0 | 23.8 | 27.3 | 33.4 | 33.8 | 30.9 | 22.9 | 18.2 | 13.3 |
| Average temperature (°C) | 4.0 | 5.7 | 11.9 | 15.4 | 18.2 | 22.7 | 28.1 | 28.8 | 26.1 | 17.7 | 12.8 | 7.5 |
| Average night temperature (°C) | -0.3 | 1.0 | 7.1 | 10.6 | 13.7 | 18.9 | 23.6 | 25.1 | 22.8 | 13.2 | 8.3 | 3.0 |
| Absolute minimum temperature (°C) | -5.7 | -4.8 | 0.1 | 3.7 | 7.2 | 12.4 | 21.1 | 23.4 | 16.8 | 8.4 | 3.3 | -2.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 7.9 | 7.8 | 8.7 | 8.9 | 7.6 | 10.4 | 11.0 | 9.0 | 8.4 | 7.2 | 7.7 |
| Precipitation (mm) | 26 | 37 | 127 | 84 | 186 | 316 | 39 | 98 | 220 | 105 | 61 | 36 |
| Sunny days | 18 | 19 | 15 | 16 | 14 | 4 | 11 | 6 | 7 | 14 | 18 | 20 |
| Rainy days | 10 | 8 | 16 | 14 | 17 | 26 | 20 | 25 | 23 | 17 | 12 | 10 |
| Snow days | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Ōnuma during the most sunny months:
The largest precipitation sum in Ōnuma is at